19656805

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{353}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 28410624

約数和(自身を除く): 8753819

約数列:

[1, 5, 7, 35, 37, 43, 185, 215, 259, 301, 353, 1295, 1505, 1591, 1765, 2471, 7955, 11137, 12355, 13061, 15179, 55685, 65305, 75895, 91427, 106253, 457135, 531265, 561623, 2808115, 3931361, 19656805]

約数ペア:

[(1, 19656805), (5, 3931361), (7, 2808115), (35, 561623), (37, 531265), (43, 457135), (185, 106253), (215, 91427), (259, 75895), (301, 65305), (353, 55685), (1295, 15179), (1505, 13061), (1591, 12355), (1765, 11137), (2471, 7955)]